body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f8f9fa;
    color: #343a40;
    line-height: 1.6;
}

header {
    background-color: #ffffff;
    padding: 20px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.05);
    border-bottom: 1px solid #eee;
}

nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    justify-content: center;
}

nav li {
    margin: 0 20px;
}

nav a {
    text-decoration: none;
    color: #495057;
    font-weight: 500;
    transition: color 0.3s ease;
}

nav a:hover {
    color: #007bff;
}

#ip-warning {
    background-color: #fff3cd;
    color: #85640a;
    padding: 10px;
    text-align: center;
    border-bottom: 1px solid #ffeeba;
}

#ip-warning.hidden {
    display: none;
}

main {
    padding: 30px;
    max-width: 960px;
    margin: 0 auto;
}

#homepage {
    text-align: center;
}

.content-section {
    margin-top: 40px;
    padding: 30px;
    background-color: #fff;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.05);
    border: 1px solid #eee;
}

.content-section h2 {
    color: #007bff;
    margin-bottom: 20px;
    border-bottom: 2px solid #eee;
    padding-bottom: 10px;
}

.content-section img {
    max-width: 120px;
    display: block;
    margin: 20px auto;
    opacity: 0.8;
}

.button {
    display: inline-block;
    padding: 12px 24px;
    background-color: #007bff;
    color: #fff;
    text-decoration: none;
    border-radius: 6px;
    margin-top: 20px;
    transition: background-color 0.3s ease;
}

.button:hover {
    background-color: #0056b3;
}

footer {
    text-align: center;
    padding: 20px;
    background-color: #f8f9fa;
    color: #6c757d;
    border-top: 1px solid #eee;
    margin-top: 40px;
}

.error-page {
    padding: 20px;
}

.error-page h1 {
    color: #dc3545;
    margin-bottom: 20px;
}

.error-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.error-item {
    background-color: #fff;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    border: 1px solid #eee;
    transition: transform 0.2s ease;
}

.error-item:hover {
    transform: scale(1.02);
}

.error-item h3 {
    margin-top: 0;
    color: #007bff;
}

.accordion-button {
    background-color: #f8f9fa;
    color: #343a40;
    cursor: pointer;
    padding: 15px;
    width: 100%;
    border: none;
    text-align: left;
    outline: none;
    font-size: 16px;
    transition: background-color 0.3s ease;
    border-bottom: 1px solid #eee;
}

.accordion-button.active, .accordion-button:hover {
    background-color: #e9ecef;
}

.accordion-content {
    padding: 0 15px;
    background-color: white;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    border-left: 1px solid #eee;
    border-right: 1px solid #eee;
    border-bottom: 1px solid #eee;
}